Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / h261.h
CommitLineData
2ba45a60
DM
1/*
2 * H261 decoder
3 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4 * Copyright (c) 2004 Maarten Daniels
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file
25 * h261codec.
26 */
27
28#ifndef AVCODEC_H261_H
29#define AVCODEC_H261_H
30
31#include "mpegvideo.h"
32#include "rl.h"
33
34/**
35 * H261Context
36 */
37typedef struct H261Context {
38 MpegEncContext s;
39
40 int current_mba;
41 int mba_diff;
42 int mtype;
43 int current_mv_x;
44 int current_mv_y;
45 int gob_number;
46 int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read
47} H261Context;
48
49#define MB_TYPE_H261_FIL 0x800000
50
51extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3];
52
53extern const uint8_t ff_h261_mba_code[35];
54extern const uint8_t ff_h261_mba_bits[35];
55extern const uint8_t ff_h261_mtype_code[10];
56extern const uint8_t ff_h261_mtype_bits[10];
57extern const int ff_h261_mtype_map[10];
58extern const uint8_t ff_h261_mv_tab[17][2];
59extern const uint8_t ff_h261_cbp_tab[63][2];
60extern RLTable ff_h261_rl_tcoeff;
61
62void ff_h261_loop_filter(MpegEncContext *s);
63void ff_h261_common_init(void);
64
65int ff_h261_get_picture_format(int width, int height);
66void ff_h261_reorder_mb_index(MpegEncContext *s);
67void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64],
68 int motion_x, int motion_y);
69void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number);
70void ff_h261_encode_init(MpegEncContext *s);
71
72#endif /* AVCODEC_H261_H */